llvm/test/MC/COFF/seh-align2.s

   1 // This test checks the alignment and padding of the unwind info.
   2
   3 // RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-readobj -S --sd --sr -u - | FileCheck %s
   4
   5 // CHECK:      Sections [
   6 // CHECK:        Section {
   7 // CHECK:          Name: .xdata
   8 // CHECK:          RawDataSize: 16
   9 // CHECK:          RelocationCount: 1
  10 // CHECK:          Characteristics [
  11 // CHECK-NEXT:       ALIGN_4BYTES
  12 // CHECK-NEXT:       CNT_INITIALIZED_DATA
  13 // CHECK-NEXT:       MEM_READ
  14 // CHECK-NEXT:     ]
  15 // CHECK:          Relocations [
  16 // CHECK-NEXT:       [[HandlerDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB __C_specific_handler
  17 // CHECK-NEXT:     ]
  18 // CHECK:          SectionData (
  19 // CHECK-NEXT:       0000: 09000100 04220000 00000000 BEBAFECA
  20 // CHECK-NEXT:     )
  21 // CHECK-NEXT:   }
  22 // CHECK-NEXT:   Section {
  23 // CHECK:          Name: .pdata
  24 // CHECK:          RawDataSize: 12
  25 // CHECK:          RelocationCount: 3
  26 // CHECK:          Characteristics [
  27 // CHECK-NEXT:       IMAGE_SCN_ALIGN_4BYTES
  28 // CHECK-NEXT:       IMAGE_SCN_CNT_INITIALIZED_DATA
  29 // CHECK-NEXT:       IMAGE_SCN_MEM_READ
  30 // CHECK-NEXT:     ]
  31 // CHECK:          Relocations [
  32 // CHECK-NEXT:       [[BeginDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .text
  33 // CHECK-NEXT:       [[EndDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .text
  34 // CHECK-NEXT:       [[UnwindDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .xdata
  35 // CHECK-NEXT:     ]
  36 // CHECK:          SectionData (
  37 // CHECK-NEXT:       0000: 00000000 09000000 00000000
  38 // CHECK-NEXT:     )
  39 // CHECK-NEXT:   }
  40 // CHECK-NEXT: ]
  41 // CHECK:      UnwindInformation [
  42 // CHECK-NEXT:   RuntimeFunction {
  43 // CHECK-NEXT:     StartAddress: .text ([[BeginDisp]])
  44 // CHECK-NEXT:     EndAddress: func {{(\+0x[A-F0-9]+ )?}}([[EndDisp]])
  45 // CHECK-NEXT:     UnwindInfoAddress: .xdata {{(\+0x[A-F0-9]+ )?}}([[UnwindDisp]])
  46 // CHECK-NEXT:     UnwindInfo {
  47 // CHECK-NEXT:       Version: 1
  48 // CHECK-NEXT:       Flags [
  49 // CHECK-NEXT:         ExceptionHandler
  50 // CHECK-NEXT:       ]
  51 // CHECK-NEXT:       PrologSize: 0
  52 // CHECK-NEXT:       FrameRegister: -
  53 // CHECK-NEXT:       FrameOffset: -
  54 // CHECK-NEXT:       UnwindCodeCount: 1
  55 // CHECK-NEXT:       UnwindCodes [
  56 // CHECK-NEXT:         0x04: ALLOC_SMALL size=24
  57 // CHECK-NEXT:       ]
  58 // CHECK-NEXT:       Handler: __C_specific_handler ([[HandlerDisp]])
  59 // CHECK-NEXT:     }
  60 // CHECK-NEXT:   }
  61 // CHECK-NEXT: ]
  62
  63 // Generates only one unwind code.
  64 // Requires padding of the unwind code array.
  65     .globl func
  66     .def func; .scl 2; .type 32; .endef
  67     .seh_proc func
  68     subq $24, %rsp
  69     .seh_stackalloc 24
  70     .seh_handler __C_specific_handler, @except
  71     .seh_handlerdata
  72     .long 0xcafebabe
  73     .text
  74     .seh_endprologue
  75 func:
  76     addq $24, %rsp
  77     ret
  78     .seh_endproc